2. The Vertebrates
Phylum: Chordata
Subphylum: Vertebrata

3. Class: Ichthyes EXAMPLES: Cartilagenous Fish: Bony Fish: Perch
Sharks
Skates
Rays
Bony Fish:
Perch
Lungfish

4. Class: Ichthyes Habitat aquatic freshwater & marine warm & cold
Integumentary System
scales, mucus

5. Class: Ichthyes Respiratory System gills for gas exchange
Circulatory System
2-chambered heart
1 ventricle
1 atrium

6. Class: Ichthyes Body Temp Regulation Ectothermic: Reproductive System
body temp. same as surrounding environment
Reproductive System
External fertilization
Large number of eggs

7. Class: Ichthyes Special Adaptations Well adapted to life in water:
Swim bladder – for buoyancy
Gills
Operculum - protects gills
Fins

8. Class: Amphibia Examples frogs, salamanders Habitat fresh water
terrestrial (but close to water)
mostly warm

9. Class: Amphibia Integumentary System moist skin Respiratory System
Gas exchange thru skin – MUST REMAIN MOIST!
Larvae – gills
Adults - lungs

10. Class: Amphibia Circulatory System 3-chambered heart
1 Ventricle
Right and left atrium
Body Temp Regulation
Ectothermic

11. Class: Amphibia Reproductive System External Fertilization
Large number of eggs
Development
Metamorphosis

12. Class: Amphibia Special Adaptations
Bridge between aquatic and terrestrial life:
Lungs
Webbed feet
Moist skin
Metamorphosis

13. Class: Reptilia Examples
Lizards, snakes, turtles, crocodiles, dinosaurs
Habitat
Terrestrial (often dry)
Warm

14. Class: Reptilia Integumentary System Scales, shells – to retain water
Respiratory System
Well-developed lungs

15. Class: Reptilia Circulatory System 3-chambered heart
with partial septum
Body Temp Regulation
Ectothermic

16. Class: Reptilia Reproductive System Internal fertilization
Fewer eggs produced
Development
Amniotic egg – to nourish the embryo

17. Class: Reptilia Special Adaptations Well adapted to life on land:
Amniotic egg
Scales
Well-developed lungs

18. Class: Aves
Examples
Birds:
Ostrich
Robin
Eagle
duck

19. Class: Aves Habitat Terrestrial Arboreal (in trees) Warm and cold
Integumentary System
Feathers

20. Class: Aves Respiratory System Lungs with air sacs Circulatory System
4-chambered heart
2 ventricles
2 atria

21. Class: Aves Body Temp Regulation
Endothermic – body temperature is maintained internally at a certain range
Reproductive System
Internal fertilization
Fewer eggs produced
Amniotic egg

22. Class: Aves Special Adaptations Flight Adaptations:
Wings
Feathers
Hollow bones
Adaptations to environment:
Beaks –food source
Feet – lifestyle
Wings

23. Class: Mammalia Examples Placental: humans, dogs, elephants, whales
Marsupial: kangaroo
Monotreme: platypus

24. Class: Mammalia Habitat Terrestrial Aquatic Arboreal Warm & cold
Integumentary System
Skin
Hair or fur

25. Class: Mammalia Respiratory System Lungs and diaphram
Circulatory System
4-chambered heart
2 atria
2 ventricles
Body Temp Regulation
Endothermic

26. Class: Mammalia Reproductive System Internal fertilization Live birth
Embryo develops internally
Except monotremes lay eggs

27. Class: Mammalia Special Adaptations mammary glands placenta live birth
large brain
variety of teeth